Add comments about the required kubernetes versions to values.yaml

charts/kube-prometheus-stack/values.yaml

@@ -1228,6 +1228,10 @@ kubeApiServer:
     #   replacement: kubernetes.default.svc:443
 
     ## Enable scraping Service Level Indicator (SLI) metrics (/metrics/slis)
+    ## Requires kubernetes 1.27 or newer.
+    ## Also be used with kubernetes 1.26, but in that case ComponentSLIs feature-gate must be enabled,
+    ## since the feature-gate is in Alpha state in kubernetes 1.26.
+    ##
     slis:
       enabled: false
 
@@ -1319,6 +1323,9 @@ kubelet:
     resourcePath: "/metrics/resource/v1alpha1"
 
     ## Enable scraping Service Level Indicator (SLI) metrics (/metrics/slis) from kubelet's service
+    ## Requires kubernetes 1.27 or newer.
+    ## Also be used with kubernetes 1.26, but in that case ComponentSLIs feature-gate must be enabled,
+    ## since the feature-gate is in Alpha state in kubernetes 1.26.
     ##
     slis: false
 
@@ -1563,6 +1570,10 @@ kubeControllerManager:
     #   action: replace
 
     ## Enable scraping Service Level Indicator (SLI) metrics (/metrics/slis)
+    ## Requires kubernetes 1.27 or newer.
+    ## Also be used with kubernetes 1.26, but in that case ComponentSLIs feature-gate must be enabled,
+    ## since the feature-gate is in Alpha state in kubernetes 1.26.
+    ##
     slis:
       enabled: false
 
@@ -1943,6 +1954,10 @@ kubeScheduler:
     #   action: replace
 
     ## Enable scraping Service Level Indicator (SLI) metrics (/metrics/slis)
+    ## Requires kubernetes 1.27 or newer.
+    ## Also be used with kubernetes 1.26, but in that case ComponentSLIs feature-gate must be enabled,
+    ## since the feature-gate is in Alpha state in kubernetes 1.26.
+    ##
     slis:
       enabled: false
 
@@ -1961,6 +1976,8 @@ kubeScheduler:
       #   targetLabel: nodename
 
     ## Enable scraping resources metrics (/metrics/resources)
+    ## Requires kubernetes 1.20 or newer.
+    ##
     resources:
       enabled: false
 
@@ -2063,6 +2080,10 @@ kubeProxy:
     #   sourceLabels: [__name__]
 
     ## Enable scraping Service Level Indicator (SLI) metrics (/metrics/slis)
+    ## Requires kubernetes 1.27 or newer.
+    ## Also be used with kubernetes 1.26, but in that case ComponentSLIs feature-gate must be enabled,
+    ## since the feature-gate is in Alpha state in kubernetes 1.26.
+    ##
     slis:
       enabled: false